Information Assurance
Viruses
A virus is a program written to cause problems. It is inserted into a normally benign program, then is triggered by some user or system action. Viruses can be delivered hidden in email, as attachments to communication or can be hidden in files users download from the Internet. Viruses are very dangerous to computers and networks. Some destroy all information on the hard drive, others flood the network with spurious or infected email. Viruses also infect clean copies of programs. This differentiates them from Trojan horses and worms.
D
13 of 19